Skip to main content

Gzip upload on browsers



Today, I faced a problem that I could not upload my archive file with gzip format on Firefox, even it worked on Chrome. I was using macOS. My application had a setting to whitelist accepted files. I’ve already added "application/gzip" to that list. "It’s strange!", I thought.

I finally figured out that my uploaded file's type actually was "application/x-gzip" on Firefox. I also asked my colleagues to check their uploaded files on Window and Ubuntu. Hmm… they were totally different! It was "application/x-compressed" on Window, and was "application/x-compressed-tar" on Ubuntu.

In fact, gzip is already standardized by IANA. There is a note in RFC-6713 as below:

"Some applications have informally used media types such as application/gzip-compressed, application/gzipped, application/x-gunzip, application/x-gzip, application/x-gzip-compressed, and gzip/document to describe data compressed with gzip. The media types defined in this document should replace those media types in future applications."

As you can see, the difference of media types among browsers still persists as of this writing. That was the root cause!

Therefore, I had to added all media types including "application/zip,application/x-gzip,application/x-compressed,application/x-compressed-tar" in my app's whitelist.

Comments

  1. anh làm một blog về sự quan trọng của tiếng anh ( speaking, writing ) đi anh. Một dev có được skill viết như anh thì có được đãi ngộ gì đặc biệt hơn kh ạ

    ReplyDelete
    Replies
    1. Để mình kể cho bạn nghe câu chuyện học tiếng Anh của mình để xem nó quan trọng thế nào với mình nhé. Thực ra, ban đầu động lực học tiếng Anh duy nhất của mình là cố gắng "sống sót" trong môi trường làm việc sử dụng tiếng Anh để giao tiếp. Lúc đó, trong team mình còn "bị đánh giá" là hạng D (trong thang điểm A, B, C, D). Ghê chưa! Nhìn xung quanh sao người ta ai cũng giỏi, ai cũng hay quá, thế là mình hạ quyết tâm học cho bằng được. Trong lúc người ta còn ngủ, mình phải dậy sớm học tiếng Anh; trong lúc người ta nghỉ trưa, mình học tiếng Anh; và trong lúc người ta đi xem phim tối, mình học tiếng Anh. Trong vòng 6 tháng như vậy thì mình đã tự tin ra hẳn, nói được và nghe được. Từ đó, mình cảm thấy tiếng Anh là một thứ gì đó không thể thiếu hằng ngày. Mình có thể đọc sách tiếng Anh, xem phim tiếng Anh, học khoá học tiếng Anh, đi meetup nói tiếng Anh, vân vân. Vậy là khi thành thạo nó thì bây giờ nó trở thành công cụ giúp mình tiếp nhận rất nhiều thông tin, học hỏi được nhiều thứ, và "enjoy" cuộc sống nhiều hơn.

      Trong môi trường sử dụng tiếng Anh để giao tiếp, nếu bạn có tiếng Anh tốt thì bạn mới giao tiếp tốt. Ngôn ngữ cũng giống như protocol trong phần mềm. Bạn phải hiểu và sử dụng đúng protocol thì hệ thống mới hoạt động đúng. Bạn giỏi tiếng Anh, bạn tự tin khi giao tiếp với khách hàng, bạn tự tin viết tài liệu, bạn tư tin xông pha học cái mới, bạn tự tin khi thuyết trình, vân vân. Bạn sẽ được giao nhiều việc quan trọng và mang lại nhiều giá trị cho công ty. Như vậy, vì cái "dich vụ" của bạn quá tốt, chắc chắn bạn phải thoả thuận được "giá cao". :)

      Delete

Post a Comment

Popular posts from this blog

Coders are NERDS | Learning English with Podcast

Let's learn three English vocabulary words based on real-life context through a humorous video about the life of software coders, especially at big tech companies when they work from home. Credit to Joma Tech. 🤓

The HelloWorld example of JSF 2.2 with Myfaces

I just did by myself create a very simple app "HelloWorld" of JSF 2.2 with a concrete implementation Myfaces that we can use it later on for our further JSF trying out. I attached the source code link at the end part. Just follow these steps below: 1. Create a Maven project in Eclipse (Kepler) with a simple Java web application archetype "maven-archetype-webapp". Maven should be the best choice for managing the dependencies , so far. JSF is a web framework that is the reason why I chose the mentioned archetype for my example. 2. Import dependencies for JSF implementation - Myfaces (v2.2.10) into file pom.xml . The following code that is easy to find from  http://mvnrepository.com/  with key words "myfaces". <dependency> <groupId>org.apache.myfaces.core</groupId> <artifactId>myfaces-api</artifactId> <version>2.2.10</version> </dependency> <dependency> <groupId>org.apache.myfaces.core<...

Generating PDF/A From HTML in Meteor

My live-chat app was a folk of project Rocket.Chat which was built with Meteor. The app had a feature that administrative users were able to export the conversations into PDF files. And, they wanted to archive these files for a long time. I happened to know that PDF/A documents were good for this purpose. It was really frustrated to find a solution with free libraries. Actually, it took me more than two weeks to find a possible approach. TL, DR; Using Puppeteer to generate a normal PDF and using PDFBox to load and converting the generated PDF into PDF/A compliance. What is PDF/A? Here is a definition from Wikipedia: PDF/A  is an  ISO -standardized version of the  Portable Document Format  (PDF) specialized for use in the  archiving  and long-term  preservation  of  electronic documents . PDF/A differs from PDF by prohibiting features unsuitable for long-term archiving, such as  font  linking (as opposed to  font em...

Why Functional Programming Matter

What issues do we concern when implementing and maintaining systems? One of the most concern is debugging during maintenance: "this code crashed because it observed some unexpected value." Then, it turns out that the ideas of  no side effects  and  immutability , which functional programming promotes, can help. Shared mutable data is the root cause Shared mutable data are read and updated by more than one of the methods. Share mutable data structures make it harder to track changes in different parts of your program. An immutable object is an object that can't change its state after it's instantiated so it can't be affected by the actions of a function. It would be a dream to maintain because we wouldn't have any bad surprises about some object somewhere that unexpectedly modifies a data structure. A new thinking: Declarative programming There are two ways thinking about implementing a system by writing a program. - Imperative programming: has...

Junit - Test fails on French or German string assertion

In my previous post about building a regex to check a text without special characters but allow German and French . I met a problem that the unit test works fine on my machine using Eclipse, but it was fail when running on Jenkins' build job. Here is my test: @Test public void shouldAllowFrenchAndGermanCharacters(){ String source = "ÄäÖöÜüß áÁàÀâÂéÉèÈêÊîÎçÇ"; assertFalse(SpecialCharactersUtils.isExistSpecialCharater(source)); } Production code: public static boolean isExistNotAllowedCharacters(String source){ Pattern regex = Pattern.compile("^[a-zA-Z_0-9_ÄäÖöÜüß áÁàÀâÂéÉèÈêÊîÎçÇ]*$"); Matcher matcher = regex.matcher(source); return !matcher.matches(); } The result likes the following: Failed tests: SpecialCharactersUtilsTest.shouldAllowFrenchAndGermanCharacters:32 null A guy from stackoverflow.com says: "This is probably due to the default encoding used for your Java source files. The ö in the string literal in the J...